Do not turn off your computer or disconnect from the power source while updating the BIOS as this could harm your computer. During the update, your computer will restart and you may briefly see a black screen.
Before updating, please read the installation instructions and important information noted below.
Dell Latitude C400 System BIOS, A12
AUTO INSTALLEDThis file was automatically installed as part of a recent update. If you are experiencing any issues, you can manually download and reinstall.
This file was automatically installed as part of a recent update. If you are experiencing any issues, you can manually download and reinstall.
Dell Latitude C400 A12 System BIOS
Recommended
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The following modifications were made to the A11 BIOS to create A12:
Issues Fixed: 1. Fixed issue in which the system continues to report the status of the original battery if a battery swap is performed while in Standby. 2. Optimized the battery charging algorithm. 3. Removed the SMBIOS Type D4h audio tokens since they do not have any effect. The audio mode is always "full duplex".
The BIOS release has been validated on the following operating systems: 1. Microsoft Windows NT 4.0 2. Microsoft Windows 98 Second Edition APM Only 3. Microsoft Windows 2000 ACPI 4. Microsoft Windows XP ACPI =================================================================== ===================================================================
Dell Technologies recommends reviewing this update to determine if it applies to your system. The update contains changes that impact only certain configurations or provides new features that may or may not apply to your environment.
This is a large file. Depending on your connection speed, it may take some time to download.
Format Description:
This file contains a compressed (or zipped) set of files. Download the file to a folder on your hard drive, and then run (double-click) it to unzip the set of files. Follow the instructions to complete the installation.
To ensure the integrity of your download, please verify the checksum value.
MD5:
Not available
SHA1:
Not available
SHA-256:
Not available
File Format:One or more self extracting disk images inside of a self extracting zip
File Name:C400-A12.EXE
File Size:1.36 MB
This is a large file. Depending on your connection speed, it may take some time to download.
Format Description:
This file contains a compressed (or zipped) set of files. Download the file to a folder on your hard drive, then double-click it to unzip the set of files. Follow the instructions to complete the installation.
To ensure the integrity of your download, please verify the checksum value.
MD5:
Not available
SHA1:
Not available
SHA-256:
Not available
File Format:Flash BIOS executable
File Name:C400_A12.exe
File Size:378.01 KB
This is a large file. Depending on your connection speed, it may take some time to download.
Format Description:
This file format consists of a BIOS-executable file. To use it, download the file and copy it to a DOS-bootable USB flash drive, then boot the system to the USB flash drive and run the program.
1. Click Download Now, to download the file. 2. When the File Download window appears, click Save (Windows XP users will click Save) this program to disk and click OK. The Save In: window appears. 3. From the Save In: field, click the down arrow then click to select Desktop and click Save. The file will download to your desktop. 4. If the Download Complete window appears, click Close. The file icon appears on your desktop.
Hard Drive Floppy Disk Creation
1. Get 1 blank, formatted floppy disks. 2. Double-click the new icon (it looks like a floppy diskette) on the desktop. The Self-Extractor window appears. 3. Click Setup. An black MS-DOS window appears with a message indicating that you need 1 floppy diskettes. 4. Press the [ENTER] key. A message appears prompting you to insert a blank floppy diskette. 5. Insert a floppy disk into the floppy disk drive. 6. Press the [ENTER] key. A message appears indicating that all data on the disk will be erased. 7. Press the [y] key and then press the [ENTER] key. The files are copied to the floppy diskette. If the procedure requires more than one diskette, repeat steps 5 – 7 until you reach the end of the diskette set. 8. After all the files have been copied to the last floppy disk, press the [ENTER] key and the MS-DOS window closes.
Install
1. Insert the first (or the only) disk of the set into the Floppy drive. 2. Click Start, click Shutdown, click Restart, and then click OK. Windows XP Users need only click restart. 3. Follow the on-screen instructions.
Custom Instructions for C400_A12.exe:
This file format consists of a BIOS executable file. To use it, download the file and copy it to a DOS-bootable diskette. With the diskette in the floppy drive, reboot the system and run the program. Custom Instructions for C400_A12.TXT:
This file format contains plain text which can be viewed with a standard text editor. Custom Instructions for A12-C400.EXE:
Hard Drive Installation (via WinZip) with Setup.exe File for A12-C400.exe
Download 1. Click Download Now, to download the file. 2. If the Export Compliance Disclaimer window appears, click Yes, I Accept this Agreement. 3. When the File Download window appears, click Save (Windows XP users will click Save) this program to disk and click OK. The Save In: window appears. 4. From the Save In: field, click the down arrow then click to select Desktop and click Save. The file will download to your desktop. 5. If the Download Complete window appears, click Close. The file icon appears on your desktop.
Install 1. Double-click the new icon on the desktop labeled A12-C400.exe. 2. The Self-Extracting window appears and prompts you to extract or unzip to C:\DELL\DRIVERS\R74024. Write down this path so the executable (I.e. Setup.exe) file can be found later. 3. The Self-Extractor window appears. 4. Click OK. 5. After completing the file extraction, if the Self-Extractor window is still open, close it. 6. Click the Start button and then click Run. 7. Type C:\DELL\DRIVERS\R74024 in the Open textbox and then click OK. 8. Follow the on-screen installation instructions.
Need help with BIOS issues?
Find a solution in Dell's BIOS troubleshooting and usage guide.